Glynn Clements writes:
About the only functions in Network.CGI which might be useful for processing file uploads are getQueryString and getCgiVars, neither of which are exported.
Fortunately, another reader of this list has written the necessary parsers already and sent me a copy of the code via e-mail; so the file-upload problem is solved for now. I've essentially replaced Network.CGI with his code in my application altogether.
This seems to be a common problem with Haskell libraries, i.e. define lots of useful low-level functions, use them to create a high-level interface (which typically isn't as useful as the author assumes), then only export the high-level interface.
Yes, the Network.CGI library is particularly weird in that regard. The 'wrapper' API comes with several rather severe limitations: the hard-coded list of supported 'cgiVarNames', for example. I've also wondered why 'abort' isn't exported, and so on ... Peter